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  • 1
    Electronic Resource
    Electronic Resource
    High-intensity plasma-sputter heavy negative-ion source (invited) : International conference on ion sources (1990)
    [S.l.] : American Institute of Physics (AIP)
    Review of Scientific Instruments 61 (1990), S. 372-377 
    Details
    ISSN: 1089-7623
    Source: AIP Digital Archive
    Topics: Physics , Electrical Engineering, Measurement and Control Technology
    Notes: A multicusp magnetic field plasma-surface ion source, normally used for H−ion-beam formation, has been modified for the generation of high-intensity, pulsed, heavy-negative-ion beams suitable for a variety of uses. A brief description of the source and basic pulsed-mode operational data (e.g., intensity versus cesium oven temperature, sputter probe voltage, and discharge pressure) are given. In addition, illustrative examples of intensity versus time and the mass distributions of ion beams extracted from a number of samples, along with emittance data, are also presented. Preliminary results obtained during dc operation of the source under low-discharge-power conditions suggest that sources of this type may alo be used to produce high-intensity (mA) dc beams.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1141298
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Photochemical diodes of a TiO2 film prepared by a sol-gel method (1994)
    Springer
    Catalysis letters 26 (1994), S. 141-147 
    Details
    ISSN: 1572-879X
    Keywords: photochemical diode ; titanium dioxide ; thin film ; hydrogen photo-evolution ; light-energy conversion
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract Photochemical diodes were prepared using a thin film of TiO2 made from titanium isopropoxide by a sol-gel method. A half part of a conductive SnO2 film plated on a quartz plate was coated with the TiO2 film, and the other parts of the SnO2 substrate were coated with a thin Pt film. The photochemical diode thus prepared shows photocatalytic activity for hydrogen evolution from aqueous ethanol solutions containing NaOH or HClO4. No other products are detected in the gas phase. Hydrogen evolution from the Pt part is definitely observed, indicating electron transfer from the TiO2 film to the Pt film through the SnO2 film. Another type of photochemical diode, the TiO2 film coated on a Pt plate, is found to show higher activity than the TiO2/SnO2/Pt device for the hydrogen photo-evolution without any support electrolyte. Hydrogen evolution on this device, however, occurs on the TiO2 side but not on the Pt side. These results are discussed in terms of a photo-electrochemical mechanism at semiconductor surfaces.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00824039
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  • 3
    Electronic Resource
    Electronic Resource
    Characterization of iron oxide thin film prepared by the sol-gel method (1991)
    Springer
    Journal of materials science 26 (1991), S. 497-504 
    Details
    ISSN: 1573-4803
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract Thin films consisting of γ-Fe2O3 particles were prepared by a spin-on process using a solution of iron (III) nitrate dissolved in ethylene glycol. Film thickness was observed to be controlled by the solution viscosity as well as the revolution of a spinner. Local structures around iron ions in the solution were studied by extended X-ray absorption fine structure spectroscopy and the formation of an (FeO x ) n cluster was deduced. A film thus prepared was confirmed to consist of finely divided γ-Fe2O3 particles by TEM observation. Magnetic and optical properties of the films are briefly discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00576549
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  • 4
    Electronic Resource
    Electronic Resource
    Preparation of SrSiO3 powders from various strontium salts (1991)
    Springer
    Journal of materials science 10 (1991), S. 9-12 
    Details
    ISSN: 1573-4811
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00724416
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    Paper (German National Licenses)
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